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Inhomogeneous cosmology and backreaction: Current status and future prospects


Bolejko, K and Korzynski, M, Inhomogeneous cosmology and backreaction: Current status and future prospects, International Journal of Modern Physics D, 26, (6) Article 1730011. ISSN 0218-2718 (2017) [Refereed Article]

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DOI: doi:10.1142/S0218271817300117


Astronomical observations reveal hierarchical structures in the universe, from galaxies, groups of galaxies, clusters and superclusters, to filaments and voids. On the largest scales, it seems that some kind of statistical homogeneity can be observed. As a result, modern cosmological models are based on spatially homogeneous and isotropic solutions of the Einstein equations, and the evolution of the universe is approximated by the Friedmann equations. In parallel to standard homogeneous cosmology, the field of inhomogeneous cosmology and backreaction is being developed. This field investigates whether small scale inhomogeneities via nonlinear effects can backreact and alter the properties of the universe on its largest scales, leading to a non-Friedmannian evolution. This paper presents the current status of inhomogeneous cosmology and backreaction. It also discusses future prospects of the field of inhomogeneous cosmology, which is based on a survey of 50 academics working in the field of inhomogeneous cosmology.

Item Details

Item Type:Refereed Article
Keywords:Inhomogeneous cosmology, backreaction, coarse-graining, numerical relativity, gravitation, cosmology, astrophysics, large scale structure of the Universe, particle dark matter
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Cosmology and extragalactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Bolejko, K (Dr Krzysztof Bolejko)
ID Code:149751
Year Published:2017
Funding Support:Australian Research Council (FT140101270)
Web of Science® Times Cited:21
Deposited By:Physics
Deposited On:2022-04-10
Last Modified:2022-06-15

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